Bolt.



F. A. woosm & F. L. KNOX.

BOLT.

APPLICATION FILED FEB.I4,1917.

Patented Jan. 28, 1919.

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a UNITED STATES PATENT OFFICE.

FREDERICK A. WOOSTER AND FREDERICK I]. KNOX, OF NEW BRITAIN, CONNECTICUT, ASSIGNORS TO THE STANLEY WORKS, OF BRITAIN, CONNECTICUT, A CORPO- RATION OF CONNECTICUT.

BOLT.

Specification of Letters Patent.

Patented Jan. 28, 1919.

I To all whom it may concern:

Be it known that we, FREDERICK A. Woo- STER and FREDERICK L. KNOX, citizens of the United States, and residents of New Britaln,

in the county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Bolts, of which the following is a specification.

The object of this invention is to improve and simplify the construction of bolts.

In the drawings- Figure l is a rear view of a bolt em'bodying our invention.

Fig. 2 is a side view with the case shown in section.

Fig. 3 is an end view.

In the drawings, a denotes in general the bolt case, which comprises a barrel 6 open at both ends and base flanges 0, 0, for securing the bolt in position, the rear face of the case having a groove 03 extending through the base flange into the barrel. As shown, the case is made from sheet metal bent up to shape, the base'flanges being formed in tegrally with the barrel, and the groove resulting from stopping the rolling of the barrel short of a complete circle. One open end of the barrel is closed by a cap 7, having an elongated slot 9. The bolt comprises the head 5 and the stem 6, with the flattened e e 7, which is introduceable through the elongated slot in the ca and constitutes a stop when the flattene end is turned at right angles to the slot, to limit the movement of the bolt under the influence of the spring 8.

The bolt is reversible for application to either the inner or outer surface of any closure, such as a door. When the bolt is in proper position in its case to meet the requirements for the particular place where it is used, that is to say, either on the outside or the inside of a door, it is desirable to hold it against rotation, and this is conveniently accomplished by securing in the bolt a pin 10 Which may conveniently be in the form of a set screw which slides in the groove d, and thus guides the longitudinal movement of the bolt. The flattened end of the bolt stem, as has been hereinabove stated, holds the bolt against movement out of the case under the influence of the spring, and in order to limit the inward movement of the bolt, stops 11 are formed in the groove for engagement with the pin 10. In a sheet metal construction such as is herein illustrated these stops may be conveniently formed by cutting and bending out small spurs 12.

Thus it will be seen that the pin performs the dual function of guiding the bolt to prevent its rotation, and of limiting the ex tent of the inward movement of the bolt. It will be obvious that without this guiding pin the bolt could be turned so that when theflattened end of the bolt stem came into reglstering position with the elongated slot in the cap, the spring would throw the bolt out of its case, at least too far to make it operative. It will also be observed that when the bolt is in position on a door, this pin is concealed so that it cannot be tampered with and cannot he accidentally displaced or lost.

In accordance with the provisions of the patent statutes. we have described the principle of operation of our invention, together with the apparatus which we now consider to represent the best embodiment thereof; but we desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

We claim as our invention 1. In an article of the character described, a case comprising a barrel and lateral securing flanges with their inner edges spaced apart to form a groove in the rear of the barrel in a position to be covered when the case is secured in an operative position, a bolt longitudinally movable in said barrel and spring-pressed in one direction, said bolt in normal operative position interlocked with said case to prevent its removal therefrom, and means mounted in said bolt when in its operative position and projecting into the groove to prevent the rotation of the bolt, said means being covered in said groove and inaccessible when the case is in an operative position.

2. In an article of the character described, a case comprising a barrel and lateral flanges, the barrel being grooved in its rear wall, a cap for one'end of the barrel provided with an elongated slot, a bolt longitudinally movable within said barrel, springpressed in one direction and provided with a flattened end insertible through the elongated slot in said cap when said bolt is turned out of operative position, said fiattened end constituting a stop when the bolt is turned to operative position, to limit its spring-pressed movement, and means on said bolt entering said groove to prevent the rotation of said bolt.

3. In an article of the character described,

a case comprising a barrel and lateral se curing flanges made from sheet metal formed up to shape, flanges spaced apart to form a groove, a bolt longitudinally movable in the barrel and spring-pressed in one direction, a cap closing one end of said barrel and provided with an elongated slot, a stem on the bolt provided With a flattened end insertible through said slot when said bolt is turned out of normal position, a pin mounted in said bolt and riding in the groove to prevent the rotation of the bolt, and spurs cut from the metal and bent to project into the groove to engage said pin to limit the longitudinal movement of the bolt in one direction.

4:. In an article of the character described, a case comprising a barrel having an elongated slot in the end thereof, a bolt longitudinally movable Within said barrel and pro- Copies ofthis patent may be obtained for five cents each,

With the inner edges of the 1 ,aeaeee means on sald bolt to prevent rotation thereof.

5. In an article of the character described,

a case comprising a barrel and lateral secur-- ing flanges With their inner edges spaced apartfto form a groove, av bolt longitudinally movable in the barrel, a pin mounted in said bolt and; ridingO in said groove to' prevent rotation of th olt, means forpreventing movement of the bolt in one direction, and spurs cuti'rom the metal and bent to project into the groove to engage said pin to limit the bolt in the opposite direction.

FREDERICK A. WOOS TER. FREDERICK L. KNOX.

by addressing the "Commissioner of ratenta.

Washington, D. 0.?

and

longitudinal movement of the 

